<template>
  <div :class="{ fullscreen: fullscreen }" :style="{ width: containerWidth }" class="tinymce-container">
    <el-input maxlength="1000" :id="tinymceId" class="tinymce-textarea" placeholder="第一行固定为授课教师：教师姓名。然后可以换行输入课程详情" />
    <div class="editor-custom-btn-container">
      <editor-attach @uploaded="handleAttr" />
    </div>
  </div>
</template>

<script>
import plugins from './plugins'
import toolbar from './toolbar'
import EditorAttach from '@/components/Tinymce/components/EditorAttach'
import { uploadFile } from '@/utils/upload'

export default {
  name: 'Tinymce',
  components: { EditorAttach },
  props: {
    id: {
      type: String,
      default: function () {
        return 'vue-tinymce-' + +new Date() + ((Math.random() * 1000).toFixed(0) + '')
      }
    },
    value: {
      type: String,
      default: ''
    },
    toolbar: {
      type: Array,
      required: false,
      default() {
        return []
      }
    },
    height: {
      type: [Number, String],
      required: false,
      default: 360
    },
    width: {
      type: [Number, String],
      required: false,
      default: 'auto'
    },
    paste: {
      type: Boolean,
      default: true
    }
  },
  data() {
    return {
      hasChange: false,
      hasInit: false,
      tinymceId: this.id,
      fullscreen: false
    }
  },
  computed: {
    containerWidth() {
      const width = this.width
      if (/^[\d]+(\.[\d]+)?$/.test(width)) {
        // matches `100`, `'100'`
        return `${width}px`
      }
      return width
    }
  },
  watch: {
    value(val) {
      if (!this.hasChange && this.hasInit) {
        this.$nextTick(() => window.tinymce.get(this.tinymceId).setContent(val || ''))
      }
    }
  },
  mounted() {
    this.initTinymce()
  },
  activated() {
    if (window.tinymce) {
      this.initTinymce()
    }
  },
  deactivated() {
    this.destroyTinymce()
  },
  destroyed() {
    this.destroyTinymce()
  },
  methods: {
    // 初始化
    initTinymce() {
      const that = this
      window.tinymce.init({
        selector: `#${this.tinymceId}`,
        convert_urls: false,
        language: 'zh_CN',
        height: this.height,
        body_class: 'panel-body ',
        object_resizing: false,
        toolbar: this.toolbar.length > 0 ? this.toolbar : toolbar,
        menubar: false,
        branding: false,
        media_live_embeds: true,
        plugins: plugins,
        end_container_on_empty_block: true,
        powerpaste_word_import: 'propmt',
        powerpaste_html_import: 'propmt',
        powerpaste_allow_local_images: true,
        paste_data_images: true,
        code_dialog_height: 450,
        code_dialog_width: 1000,
        advlist_bullet_styles: 'square',
        advlist_number_styles: 'default',
        default_link_target: '_blank',
        link_title: false,
        wirisformulaeditorlang: 'zh',
        nonbreaking_force_tab: true,
        init_instance_callback: editor => {
          if (that.value) {
            editor.setContent(that.value)
          }
          that.hasInit = true
          editor.on('NodeChange Change KeyUp SetContent', () => {
            this.hasChange = true
            this.$emit('input', editor.getContent())
          })
        },
        // 屏蔽下载功能
        extended_valid_elements: 'video[src|controlslist|controls|width|height],audio[src|controlslist|controls|width|height]',
        setup(editor) {
          editor.on('FullscreenStateChanged', e => {
            that.fullscreen = e.state
          })
        },
        // 禁用粘贴
        paste_preprocess: function (plugin, args) {
          if (!that.paste) {
            that.$message.info('考试期间不可使用粘贴哦！')
            args.stopImmediatePropagation()
            args.stopPropagation()
            args.preventDefault()
          }
        },
        // 粘贴文件上传
        images_upload_handler: function (blobInfo, success, failure) {
          console.log('++++blobInfo', blobInfo)

          const file = blobInfo.blob()
          if (!file.name) {
            file.name = 'xxxxxxx'
          }

          console.log('filename', file.name)

          uploadFile(file)
            .then(url => {
              // 回写URL地址
              success(url)
            })
            .catch(() => {
              failure()
            })
        }
      })
    },
    destroyTinymce() {
      const tinymce = window.tinymce.get(this.tinymceId)
      if (this.fullscreen) {
        tinymce.execCommand('mceFullScreen')
      }

      if (tinymce) {
        tinymce.destroy()
      }
    },
    setContent(value) {
      window.tinymce.get(this.tinymceId).setContent(value)
    },
    getContent() {
      window.tinymce.get(this.tinymceId).getContent()
    },
    handleAttr(data) {
      const that = this

      // 图片
      if (data.mediaType === 1) {
        window.tinymce.get(that.tinymceId).insertContent(`<p><img class="wscnph" src="${data.url}" /></p>`)
      }

      // 视频
      if (data.mediaType === 2) {
        window.tinymce.get(that.tinymceId).insertContent(`<p><video src="${data.url}" controls="controls" controlslist="nodownload" width="600px" height="auto" oncontextmenu="return false"></video></p>`)
      }

      // 音频
      if (data.mediaType === 3 || data.mediaType === 4) {
        window.tinymce.get(that.tinymceId).insertContent(`<p><audio src="${data.url}" controls="controls" controlslist="nodownload" oncontextmenu="return false"></audio></p>`)
      }

      // 文件
      if (data.mediaType === 5) {
        window.tinymce.get(that.tinymceId).insertContent(`<p><a href="${data.url}" target="_blank">${data.url}</a></p>`)
      }
    }
  }
}
</script>

<style scoped>
.tinymce-container {
  position: relative;
  line-height: normal;
}

.editor-custom-btn-container {
  position: absolute;
  right: 5px;
  top: 5px;
  z-index: 200;
}
.fullscreen .editor-custom-btn-container {
  z-index: 10000;
  position: fixed;
}
.editor-upload-btn {
  display: inline-block;
}
</style>
